Translating the Chunk Theme

Hi,
just downloaded the Chunk Theme and trying to get my translation working.
I used the included chunk.pot as the basis for my own translation, compiled the file and saved the appropriate files as de_DE.po and de_DE.mo both in the theme root folder and in the languages folder.

However nothing changes and everything still shows up in English. WP_LANG is defined as ‘de_DE’ in wp-options.php.

Translations should get loaded from /languages/ as per functions.php:

/**
* Make theme available for translation
* Translations can be filed in the /languages/ directory
*/
load_theme_textdomain( 'chunk', get_template_directory_uri() . '/languages' );

So where to go from here? Theme is said to be translation ready and the code looks like it, but apparently my translation files don’t get loaded…